/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.drill.yarn.client;

import java.io.PrintStream;

/**
 * Provides a static set of contextual operations that can be configured one way
 * for production, a separate way for unit tests.
 */

public class ClientContext {

  private static ClientContext instance;
  public static PrintStream err = System.err;
  public static PrintStream out = System.out;

  public static void init() {
    init(new ClientContext());
  }

  protected static void init(ClientContext instance) {
    ClientContext.instance = instance;
  }

  public static ClientContext instance() {
    return instance;
  }

  public void exit(int exitCode) {
    System.exit(exitCode);
  }
}
